Improvement in mowing-machine sharpeners



W. C. BARKER.

MOWING-MACHINE SHARPENERS.

N 185,4Z4;, Patented Dec. 19, 1876.

Witnasses: 19221672207;

THE GRAPHIC C0.N.Y

UNITED STATES PATENT OFFICE.

WILLIAM C. BARKER, OF POUGHKEEPSIE, NEW YORK.

IMPROVEMENT IN MOWlNG-MACHINE SHARPENERS.

Specification forming part of Letters Patent No. 185,424, dated December19, 1876; application filed October 16, 1875.

To all whom it may concern:

Be it known that 1, WILLIAM C. BARKER, of the city of Poughkeepsie,county of Dutchess and State of New York, have invented a new and usefulImprovement in Harvester- Outter Sharpeners; and I hereby declare thefollowing to be. a full, clear, and exact description thereof, referencebeing had to the accompanying drawing, forming a part of thisspecification, in which Figure 1 is a view of an ordinary file or rasp.Fig. 2 is an obverse view of the same, showing an abrasive compoundapplied.

My invention consists in applying to one side or edge of a file of anydesired form, a composition of emery or other abrasive substance.

A special purpose to which my improved implement is applied is inremoving the rough or ragged edges from the teeth of harvester-cuttersby first using the file portion and then applying the emery side toproduce a smooth cutting-edge.

I do not confine myself, however, to thisspecial use, as the implementis well adapted for metal-workers wherever a file and polishing-stickare needed.

The composition may be applied in a plastic state, and allowed to dry,or be placed in an oven and baked. It may be formed of any degree offineness, and be applied in one or more layers. The teeth of the fileserve to retain the composition in place, but it may be applied to asmooth surface. An interposed layer of wood may also be employed betweenthe file and composition.

I am aware that emery-sticks for the purposes described are not new; but

What I claim, and desire to secure by Letters Patent, is

1. A new article of manufacture, consisting of a file having one of itssides or edges coated with emery or other abrading substance,substantial] y as described.

2. In combination with a file of any desired form, a layer of woodattached thereto, and coated with an abrasive substance, as set forth.

WILLIAM C. BARKER.

Witnesses:

SARA B. FINGH, .NAOMI M. BARKER.

